git.sesse.net Git - vlc/blob - src/playlist/item.c

   1 /*****************************************************************************
   2  * item.c : Playlist item creation/deletion/add/removal functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Clément Stenac <zorglub@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29 #include <assert.h>
  30 #include <vlc_playlist.h>
  31 #include "playlist_internal.h"
  32
  33 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
  34                      playlist_item_t *p_node, int i_mode, int i_pos );
  35 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
  36                            playlist_item_t *, playlist_item_t * );
  37 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  38 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
  39                         bool b_stop );
  40
  41 static playlist_item_t *ItemToNode( playlist_t *, playlist_item_t *, bool );
  42
  43 /*****************************************************************************
  44  * An input item has gained a subitem (Event Callback)
  45  *****************************************************************************/
  46 static void input_item_subitem_added( const vlc_event_t * p_event,
  47                                       void * user_data )
  48 {
  49     playlist_item_t *p_parent_playlist_item = user_data;
  50     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  51     input_item_t * p_parent, * p_child;
  52     playlist_item_t * p_child_in_category;
  53     playlist_item_t * p_item_in_category;
  54     bool b_play;
  55
  56     p_parent = p_event->p_obj;
  57     p_child = p_event->u.input_item_subitem_added.p_new_child;
  58
  59     PL_LOCK;
  60     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  61
  62     /* This part is really hakish, but this playlist system isn't simple */
  63     /* First check if we haven't already added the item as we are
  64      * listening using the onelevel and the category representent
  65      * (Because of the playlist design) */
  66     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  67                             p_playlist, p_child->i_id,
  68                             p_playlist->p_root_category,
  69                             false /* Only non-node */ );
  70
  71     if( !p_child_in_category )
  72     {
  73         /* Then, transform to a node if needed */
  74         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  75                                 p_playlist, p_parent->i_id,
  76                                 p_playlist->p_root_category,
  77                                 false /* Only non-node */ );
  78         if( !p_item_in_category )
  79         {
  80             /* Item may have been removed */
  81             PL_UNLOCK;
  82             return;
  83         }
  84
  85         b_play = b_play &&
  86             p_item_in_category == get_current_status_item( p_playlist );
  87
  88         /* If this item is already a node don't transform it */
  89         if( p_item_in_category->i_children == -1 )
  90         {
  91             p_item_in_category = ItemToNode( p_playlist,
  92                     p_item_in_category, pl_Locked );
  93             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  94         }
  95
  96         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  97                 p_item_in_category,
  98                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
  99                 NULL, NULL, pl_Locked );
 100
 101         if( i_ret == VLC_SUCCESS && b_play )
 102         {
 103             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 104                           pl_Locked, p_item_in_category, NULL );
 105         }
 106     }
 107
 108     PL_UNLOCK;
 109
 110 }
 111
 112 /*****************************************************************************
 113  * An input item's meta or duration has changed (Event Callback)
 114  *****************************************************************************/
 115 static void input_item_changed( const vlc_event_t * p_event,
 116                                 void * user_data )
 117 {
 118     playlist_item_t *p_item = user_data;
 119     VLC_UNUSED( p_event );
 120     var_SetInteger( p_item->p_playlist, "item-change", p_item->p_input->i_id );
 121 }
 122
 123 /*****************************************************************************
 124  * Listen to vlc_InputItemAddSubItem event
 125  *****************************************************************************/
 126 static void install_input_item_observer( playlist_item_t * p_item )
 127 {
 128     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 129     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 130                       input_item_subitem_added, p_item );
 131     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 132                       input_item_changed, p_item );
 133     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 134                       input_item_changed, p_item );
 135     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 136                       input_item_changed, p_item );
 137     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 138                       input_item_changed, p_item );
 139     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 140                       input_item_changed, p_item );
 141 }
 142
 143 static void uninstall_input_item_observer( playlist_item_t * p_item )
 144 {
 145     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 146     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 147                       input_item_subitem_added, p_item );
 148     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 149                       input_item_changed, p_item );
 150     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 151                       input_item_changed, p_item );
 152     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 153                       input_item_changed, p_item );
 154     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 155                       input_item_changed, p_item );
 156     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 157                       input_item_changed, p_item );
 158 }
 159
 160 /*****************************************************************************
 161  * Playlist item creation
 162  *****************************************************************************/
 163 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 164                                               input_item_t *p_input )
 165 {
 166     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 167     if( !p_item )
 168         return NULL;
 169
 170     assert( p_input );
 171
 172     p_item->p_input = p_input;
 173     vlc_gc_incref( p_item->p_input );
 174
 175     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 176
 177     p_item->p_parent = NULL;
 178     p_item->i_children = -1;
 179     p_item->pp_children = NULL;
 180     p_item->i_flags = 0;
 181     p_item->p_playlist = p_playlist;
 182
 183     install_input_item_observer( p_item );
 184
 185     return p_item;
 186 }
 187
 188 /***************************************************************************
 189  * Playlist item destruction
 190  ***************************************************************************/
 191
 192 /**
 193  * Release an item
 194  *
 195  * \param p_item item to delete
 196  * \return VLC_SUCCESS
 197 */
 198 int playlist_ItemRelease( playlist_item_t *p_item )
 199 {
 200     /* For the assert */
 201     playlist_t *p_playlist = p_item->p_playlist;
 202     PL_ASSERT_LOCKED;
 203
 204     /* Surprise, we can't actually do more because we
 205      * don't do refcounting, or eauivalent.
 206      * Because item are not only accessed by their id
 207      * using playlist_item outside the PL_LOCK isn't safe.
 208      * Most of the modules does that.
 209      *
 210      * Who wants to add proper memory management? */
 211     uninstall_input_item_observer( p_item );
 212     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 213     return VLC_SUCCESS;
 214 }
 215
 216 /**
 217  * Delete input item
 218  *
 219  * Remove an input item when it appears from a root playlist item
 220  * \param p_playlist playlist object
 221  * \param i_input_id id of the input to delete
 222  * \param p_root root playlist item
 223  * \param b_do_stop must stop or not the playlist
 224  * \return VLC_SUCCESS or VLC_EGENERIC
 225 */
 226 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 227                             playlist_item_t *p_root, bool b_do_stop )
 228 {
 229     int i;
 230     PL_ASSERT_LOCKED;
 231     for( i = 0 ; i< p_root->i_children ; i++ )
 232     {
 233         if( p_root->pp_children[i]->i_children == -1 &&
 234             p_root->pp_children[i]->p_input->i_id == i_input_id )
 235         {
 236             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 237             return VLC_SUCCESS;
 238         }
 239         else if( p_root->pp_children[i]->i_children >= 0 )
 240         {
 241             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 242                                          p_root->pp_children[i], b_do_stop );
 243             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 244         }
 245     }
 246     return VLC_EGENERIC;
 247 }
 248
 249 /**
 250  * Delete input item
 251  *
 252  * Remove an input item when it appears from a root playlist item
 253  * \param p_playlist playlist object
 254  * \param i_input_id id of the input to delete
 255  * \param p_root root playlist item
 256  * \param b_locked TRUE if the playlist is locked
 257  * \return VLC_SUCCESS or VLC_EGENERIC
 258  */
 259 int playlist_DeleteFromInputInParent( playlist_t *p_playlist, int i_input_id,
 260                                       playlist_item_t *p_root, bool b_locked )
 261 {
 262     int i_ret;
 263     PL_LOCK_IF( !b_locked );
 264     i_ret = DeleteFromInput( p_playlist, i_input_id,
 265                              p_root, true );
 266     PL_UNLOCK_IF( !b_locked );
 267     return i_ret;
 268 }
 269
 270 /**
 271  * Delete from input
 272  *
 273  * Remove an input item from ONELEVEL and CATEGORY
 274  * \param p_playlist playlist object
 275  * \param i_input_id id of the input to delete
 276  * \param b_locked TRUE if the playlist is locked
 277  * \return VLC_SUCCESS or VLC_ENOITEM
 278  */
 279 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 280                               bool b_locked )
 281 {
 282     int i_ret1, i_ret2;
 283     PL_LOCK_IF( !b_locked );
 284     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 285                              p_playlist->p_root_category, true );
 286     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 287                      p_playlist->p_root_onelevel, true );
 288     PL_UNLOCK_IF( !b_locked );
 289     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 290                             VLC_SUCCESS : VLC_ENOITEM;
 291 }
 292
 293 /**
 294  * Clear the playlist
 295  *
 296  * \param p_playlist playlist object
 297  * \param b_locked TRUE if the playlist is locked
 298  * \return nothing
 299  */
 300 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 301 {
 302     PL_LOCK_IF( !b_locked );
 303     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 304     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 305     PL_UNLOCK_IF( !b_locked );
 306 }
 307
 308 /**
 309  * Delete playlist item
 310  *
 311  * Remove a playlist item from the playlist, given its id
 312  * This function is to be used only by the playlist
 313  * \param p_playlist playlist object
 314  * \param i_id id of the item do delete
 315  * \return VLC_SUCCESS or an error
 316  */
 317 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 318 {
 319     PL_ASSERT_LOCKED;
 320     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 321     if( !p_item ) return VLC_EGENERIC;
 322     return DeleteInner( p_playlist, p_item, true );
 323 }
 324
 325 /***************************************************************************
 326  * Playlist item addition
 327  ***************************************************************************/
 328 /**
 329  * Playlist add
 330  *
 331  * Add an item to the playlist or the media library
 332  * \param p_playlist the playlist to add into
 333  * \param psz_uri the mrl to add to the playlist
 334  * \param psz_name a text giving a name or description of this item
 335  * \param i_mode the mode used when adding
 336  * \param i_pos the position in the playlist where to add. If this is
 337  *        PLAYLIST_END the item will be added at the end of the playlist
 338  *        regardless of its size
 339  * \param b_playlist TRUE for playlist, FALSE for media library
 340  * \param b_locked TRUE if the playlist is locked
 341  * \return The id of the playlist item
 342  */
 343 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 344                   const char *psz_name, int i_mode, int i_pos,
 345                   bool b_playlist, bool b_locked )
 346 {
 347     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 348                             i_mode, i_pos, -1, 0, NULL, 0, b_playlist, b_locked );
 349 }
 350
 351 /**
 352  * Add a MRL into the playlist or the media library, duration and options given
 353  *
 354  * \param p_playlist the playlist to add into
 355  * \param psz_uri the mrl to add to the playlist
 356  * \param psz_name a text giving a name or description of this item
 357  * \param i_mode the mode used when adding
 358  * \param i_pos the position in the playlist where to add. If this is
 359  *        PLAYLIST_END the item will be added at the end of the playlist
 360  *        regardless of its size
 361  * \param i_duration length of the item in milliseconds.
 362  * \param i_options the number of options
 363  * \param ppsz_options an array of options
 364  * \param i_option_flags options flags
 365  * \param b_playlist TRUE for playlist, FALSE for media library
 366  * \param b_locked TRUE if the playlist is locked
 367  * \return The id of the playlist item
 368 */
 369 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 370                      const char *psz_name, int i_mode, int i_pos,
 371                      mtime_t i_duration,
 372                      int i_options, const char *const *ppsz_options, unsigned i_option_flags,
 373                      bool b_playlist, bool b_locked )
 374 {
 375     int i_ret;
 376     input_item_t *p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 377                                               i_options, ppsz_options, i_option_flags,
 378                                               i_duration );
 379
 380     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 381                                b_locked );
 382     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 383
 384     vlc_gc_decref( p_input );
 385
 386     return i_id;
 387 }
 388
 389 /**
 390  * Add an input item to the playlist node
 391  *
 392  * \param p_playlist the playlist to add into
 393  * \param p_input the input item to add
 394  * \param i_mode the mode used when adding
 395  * \param i_pos the position in the playlist where to add. If this is
 396  *        PLAYLIST_END the item will be added at the end of the playlist
 397  *        regardless of its size
 398  * \param b_playlist TRUE for playlist, FALSE for media library
 399  * \param b_locked TRUE if the playlist is locked
 400  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 401 */
 402 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 403                        int i_mode, int i_pos, bool b_playlist,
 404                        bool b_locked )
 405 {
 406     playlist_item_t *p_item_cat, *p_item_one;
 407     if( p_playlist->b_die ) return VLC_EGENERIC;
 408     if( !pl_priv(p_playlist)->b_doing_ml )
 409         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 410                                              p_input->psz_uri );
 411
 412     PL_LOCK_IF( !b_locked );
 413
 414     /* Add to ONELEVEL */
 415     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 416     if( p_item_one == NULL ) return VLC_ENOMEM;
 417     AddItem( p_playlist, p_item_one,
 418              b_playlist ? p_playlist->p_local_onelevel :
 419                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 420
 421     /* Add to CATEGORY */
 422     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 423     if( p_item_cat == NULL ) return VLC_ENOMEM;
 424     AddItem( p_playlist, p_item_cat,
 425              b_playlist ? p_playlist->p_local_category :
 426                           p_playlist->p_ml_category , i_mode, i_pos );
 427
 428     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 429
 430     PL_UNLOCK_IF( !b_locked );
 431     return VLC_SUCCESS;
 432 }
 433
 434 /**
 435  * Add input
 436  *
 437  * Add an input item to p_direct_parent in the category tree, and to the
 438  * matching top category in onelevel
 439  * \param p_playlist the playlist to add into
 440  * \param p_input the input item to add
 441  * \param p_direct_parent the parent item to add into
 442  * \param i_mode the mode used when adding
 443  * \param i_pos the position in the playlist where to add. If this is
 444  *        PLAYLIST_END the item will be added at the end of the playlist
 445  *        regardless of its size
 446  * \param i_cat id of the items category
 447  * \param i_one id of the item onelevel category
 448  * \param b_locked TRUE if the playlist is locked
 449  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 450  */
 451 int playlist_BothAddInput( playlist_t *p_playlist,
 452                            input_item_t *p_input,
 453                            playlist_item_t *p_direct_parent,
 454                            int i_mode, int i_pos,
 455                            int *i_cat, int *i_one, bool b_locked )
 456 {
 457     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 458     int i_top;
 459     assert( p_input );
 460
 461     if( !vlc_object_alive( p_playlist ) )
 462         return VLC_EGENERIC;
 463
 464     PL_LOCK_IF( !b_locked );
 465
 466     /* Add to category */
 467     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 468     if( p_item_cat == NULL ) return VLC_ENOMEM;
 469     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 470
 471     /* Add to onelevel */
 472     /** \todo make a faster case for ml import */
 473     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 474     if( p_item_one == NULL ) return VLC_ENOMEM;
 475
 476     p_up = p_direct_parent;
 477     while( p_up->p_parent != p_playlist->p_root_category )
 478     {
 479         p_up = p_up->p_parent;
 480     }
 481     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 482     {
 483         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 484                              p_up->p_input->i_id )
 485         {
 486             AddItem( p_playlist, p_item_one,
 487                      p_playlist->p_root_onelevel->pp_children[i_top],
 488                      i_mode, i_pos );
 489             break;
 490         }
 491     }
 492     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 493
 494     if( i_cat ) *i_cat = p_item_cat->i_id;
 495     if( i_one ) *i_one = p_item_one->i_id;
 496
 497     PL_UNLOCK_IF( !b_locked );
 498     return VLC_SUCCESS;
 499 }
 500
 501 /**
 502  * Add an input item to a given node
 503  *
 504  * \param p_playlist the playlist to add into
 505  * \param p_input the input item to add
 506  * \param p_parent the parent item to add into
 507  * \param i_mode the mode used when addin
 508  * \param i_pos the position in the playlist where to add. If this is
 509  *        PLAYLIST_END the item will be added at the end of the playlist
 510  *        regardless of its size
 511  * \param b_locked TRUE if the playlist is locked
 512  * \return the new playlist item
 513  */
 514 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 515                                          input_item_t *p_input,
 516                                          playlist_item_t *p_parent,
 517                                          int i_mode, int i_pos,
 518                                          bool b_locked )
 519 {
 520     playlist_item_t *p_item;
 521     assert( p_input );
 522     assert( p_parent && p_parent->i_children != -1 );
 523
 524     if( p_playlist->b_die )
 525         return NULL;
 526     PL_LOCK_IF( !b_locked );
 527
 528     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 529     if( p_item == NULL ) return NULL;
 530     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 531
 532     PL_UNLOCK_IF( !b_locked );
 533
 534     return p_item;
 535 }
 536
 537 /*****************************************************************************
 538  * Playlist item misc operations
 539  *****************************************************************************/
 540
 541 /**
 542  * Item to node
 543  *
 544  * Transform an item to a node. Return the node in the category tree, or NULL
 545  * if not found there
 546  * This function must be entered without the playlist lock
 547  * \param p_playlist the playlist object
 548  * \param p_item the item to transform
 549  * \param b_locked TRUE if the playlist is locked
 550  * \return the item transform in a node
 551  */
 552 static playlist_item_t *ItemToNode( playlist_t *p_playlist,
 553                                     playlist_item_t *p_item,
 554                                     bool b_locked )
 555 {
 556
 557     playlist_item_t *p_item_in_category;
 558     /* What we do
 559      * Find the input in CATEGORY.
 560      *  - If we find it
 561      *    - change it to node
 562      *    - we'll return it at the end
 563      *    - If we are a direct child of onelevel root, change to node, else
 564      *      delete the input from ONELEVEL
 565      *  - If we don't find it, just change to node (we are probably in VLM)
 566      *    and return NULL
 567      *
 568      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 569      * useful for later BothAddInput )
 570      */
 571
 572     PL_LOCK_IF( !b_locked );
 573
 574     /* Fast track the media library, no time to loose */
 575     if( p_item == p_playlist->p_ml_category ) {
 576         PL_UNLOCK_IF( !b_locked );
 577         return p_item;
 578     }
 579
 580     /** \todo First look if we don't already have it */
 581     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 582                                             p_playlist, p_item->p_input->i_id,
 583                                             p_playlist->p_root_category,
 584                                             true );
 585
 586     if( p_item_in_category )
 587     {
 588         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 589                                             p_playlist, p_item->p_input->i_id,
 590                                             p_playlist->p_root_onelevel,
 591                                             true );
 592         assert( p_item_in_one );
 593
 594         /* We already have it, and there is nothing more to do */
 595         ChangeToNode( p_playlist, p_item_in_category );
 596
 597         /* Item in one is a root, change it to node */
 598         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 599             ChangeToNode( p_playlist, p_item_in_one );
 600         else
 601         {
 602             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 603             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 604             if( p_item_in_one == p_status_item )
 605             {
 606                 /* We're deleting the current playlist item. Update
 607                  * the playlist object to point at the previous item
 608                  * so the playlist won't be restarted */
 609                 playlist_item_t *p_prev_status_item = NULL;
 610                 int i = 0;
 611                 while( i < p_status_node->i_children &&
 612                        p_status_node->pp_children[i] != p_status_item )
 613                 {
 614                     p_prev_status_item = p_status_node->pp_children[i];
 615                     i++;
 616                 }
 617                 if( i == p_status_node->i_children )
 618                     p_prev_status_item = NULL;
 619                 if( p_prev_status_item )
 620                     set_current_status_item( p_playlist, p_prev_status_item );
 621             }
 622             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 623                              p_playlist->p_root_onelevel, false );
 624         }
 625         pl_priv(p_playlist)->b_reset_currently_playing = true;
 626         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 627         var_SetInteger( p_playlist, "item-change", p_item_in_category->p_input->i_id );
 628         PL_UNLOCK_IF( !b_locked );
 629         return p_item_in_category;
 630     }
 631     else
 632     {
 633         ChangeToNode( p_playlist, p_item );
 634         PL_UNLOCK_IF( !b_locked );
 635         return p_item;
 636     }
 637 }
 638
 639 /**
 640  * Find an item within a root, given its input id.
 641  *
 642  * \param p_playlist the playlist object
 643  * \param i_input_id id of the input
 644  * \param p_root root playlist item
 645  * \param b_items_only TRUE if we want the item himself
 646  * \return the first found item, or NULL if not found
 647  */
 648 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 649                                                     int i_input_id,
 650                                                     playlist_item_t *p_root,
 651                                                     bool b_items_only )
 652 {
 653     int i;
 654     for( i = 0 ; i< p_root->i_children ; i++ )
 655     {
 656         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 657             p_root->pp_children[i]->p_input->i_id == i_input_id )
 658         {
 659             return p_root->pp_children[i];
 660         }
 661         else if( p_root->pp_children[i]->i_children >= 0 )
 662         {
 663             playlist_item_t *p_search =
 664                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 665                                                     p_root->pp_children[i],
 666                                                     b_items_only );
 667             if( p_search ) return p_search;
 668         }
 669     }
 670     return NULL;
 671 }
 672
 673
 674 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 675                      playlist_item_t *p_node, int i_newpos )
 676 {
 677     int j;
 678     playlist_item_t *p_detach = p_item->p_parent;
 679     (void)p_playlist;
 680
 681     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 682
 683     for( j = 0; j < p_detach->i_children; j++ )
 684     {
 685          if( p_detach->pp_children[j] == p_item ) break;
 686     }
 687     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 688
 689     /* If j < i_newpos, we are moving the element from the top to the
 690      * down of the playlist. So when removing the element we have
 691      * to change the position as we loose one element
 692      */
 693     if( j < i_newpos )
 694         i_newpos--;
 695
 696     /* Attach to new parent */
 697     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 698     p_item->p_parent = p_node;
 699
 700     return VLC_SUCCESS;
 701 }
 702
 703 /**
 704  * Moves an item
 705  *
 706  * This function must be entered with the playlist lock
 707  *
 708  * \param p_playlist the playlist
 709  * \param p_item the item to move
 710  * \param p_node the new parent of the item
 711  * \param i_newpos the new position under this new parent
 712  * \return VLC_SUCCESS or an error
 713  */
 714 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 715                        playlist_item_t *p_node, int i_newpos )
 716 {
 717     int i_ret;
 718     PL_ASSERT_LOCKED;
 719
 720     /* Drop on a top level node. Move in the two trees */
 721     if( p_node->p_parent == p_playlist->p_root_category ||
 722         p_node->p_parent == p_playlist->p_root_onelevel )
 723     {
 724         /* Fixme: avoid useless lookups but we need some clean helpers */
 725         {
 726             /* Fixme: if we try to move a node on a top-level node, it will
 727              * fail because the node doesn't exist in onelevel and we will
 728              * do some shit in onelevel. We should recursively move all items
 729              * within the node */
 730             playlist_item_t *p_node_onelevel;
 731             playlist_item_t *p_item_onelevel;
 732             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 733                                                 p_node->p_input->i_id,
 734                                                 p_playlist->p_root_onelevel,
 735                                                 false );
 736             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 737                                                 p_item->p_input->i_id,
 738                                                 p_playlist->p_root_onelevel,
 739                                                 false );
 740             if( p_node_onelevel && p_item_onelevel )
 741                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
 742         }
 743         {
 744             playlist_item_t *p_node_category;
 745             playlist_item_t *p_item_category;
 746             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 747                                                 p_node->p_input->i_id,
 748                                                 p_playlist->p_root_category,
 749                                                 false );
 750             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 751                                                 p_item->p_input->i_id,
 752                                                 p_playlist->p_root_category,
 753                                                 false );
 754             if( p_node_category && p_item_category )
 755                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 756         }
 757         i_ret = VLC_SUCCESS;
 758     }
 759     else
 760         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 761     pl_priv(p_playlist)->b_reset_currently_playing = true;
 762     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 763     return i_ret;
 764 }
 765
 766 /**
 767  * Send a notification that an item has been added to a node
 768  *
 769  * \param p_playlist the playlist object
 770  * \param i_item_id id of the item added
 771  * \param i_node_id id of the node in wich the item was added
 772  * \param b_signal TRUE if the function must send a signal
 773  * \return nothing
 774  */
 775 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 776                              int i_node_id, bool b_signal )
 777 {
 778     playlist_private_t *p_sys = pl_priv(p_playlist);
 779     PL_ASSERT_LOCKED;
 780
 781     p_sys->b_reset_currently_playing = true;
 782     if( b_signal )
 783         vlc_cond_signal( &p_sys->signal );
 784
 785     playlist_add_t add;
 786     add.i_item = i_item_id;
 787     add.i_node = i_node_id;
 788
 789     vlc_value_t val;
 790     val.p_address = &add;
 791
 792     var_Set( p_playlist, "playlist-item-append", val );
 793 }
 794
 795 /***************************************************************************
 796  * The following functions are local
 797  ***************************************************************************/
 798
 799 /* Enqueue an item for preparsing, and play it, if needed */
 800 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 801                            playlist_item_t *p_item_cat,
 802                            playlist_item_t *p_item_one )
 803 {
 804     PL_ASSERT_LOCKED;
 805     if( (i_mode & PLAYLIST_GO ) )
 806     {
 807         playlist_item_t *p_parent = p_item_one;
 808         playlist_item_t *p_toplay = NULL;
 809         while( p_parent )
 810         {
 811             if( p_parent == p_playlist->p_root_category )
 812             {
 813                 p_toplay = p_item_cat; break;
 814             }
 815             else if( p_parent == p_playlist->p_root_onelevel )
 816             {
 817                 p_toplay = p_item_one; break;
 818             }
 819             p_parent = p_parent->p_parent;
 820         }
 821         assert( p_toplay );
 822         pl_priv(p_playlist)->request.b_request = true;
 823         pl_priv(p_playlist)->request.i_skip = 0;
 824         pl_priv(p_playlist)->request.p_item = p_toplay;
 825         if( pl_priv(p_playlist)->p_input )
 826             input_Stop( pl_priv(p_playlist)->p_input, true );
 827         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 828         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 829     }
 830     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 831     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 832     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 833     if( pl_priv(p_playlist)->b_auto_preparse &&
 834           (i_mode & PLAYLIST_PREPARSE ||
 835           ( i_mode & PLAYLIST_SPREPARSE &&
 836             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 837           ) ) )
 838         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 839     /* If we already have it, signal it */
 840     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 841         input_item_SetPreparsed( p_item_cat->p_input, true );
 842     free( psz_artist );
 843     free( psz_album );
 844 }
 845
 846 /* Add the playlist item to the requested node and fire a notification */
 847 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 848                      playlist_item_t *p_node, int i_mode, int i_pos )
 849 {
 850     PL_ASSERT_LOCKED;
 851     ARRAY_APPEND(p_playlist->items, p_item);
 852     ARRAY_APPEND(p_playlist->all_items, p_item);
 853
 854     if( i_pos == PLAYLIST_END )
 855         playlist_NodeAppend( p_playlist, p_item, p_node );
 856     else
 857         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 858
 859     if( !pl_priv(p_playlist)->b_doing_ml )
 860         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 861                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 862 }
 863
 864 /* Actually convert an item to a node */
 865 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 866 {
 867     int i;
 868     if( p_item->i_children == -1 )
 869         p_item->i_children = 0;
 870
 871     /* Remove it from the array of available items */
 872     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 873     if( i != -1 )
 874         ARRAY_REMOVE( p_playlist->items, i );
 875 }
 876
 877 /* Do the actual removal */
 878 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 879                         bool b_stop )
 880 {
 881     int i;
 882     int i_id = p_item->i_id;
 883     PL_ASSERT_LOCKED;
 884
 885     if( p_item->i_children > -1 )
 886     {
 887         return playlist_NodeDelete( p_playlist, p_item, true, false );
 888     }
 889     pl_priv(p_playlist)->b_reset_currently_playing = true;
 890     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 891
 892     /* Remove the item from the bank */
 893     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 894     if( i != -1 )
 895         ARRAY_REMOVE( p_playlist->all_items, i );
 896
 897     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 898     if( i != -1 )
 899         ARRAY_REMOVE( p_playlist->items, i );
 900
 901     /* Check if it is the current item */
 902     if( get_current_status_item( p_playlist ) == p_item && b_stop )
 903     {
 904         playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 905         msg_Info( p_playlist, "stopping playback" );
 906     }
 907
 908     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 909
 910     /* Remove the item from its parent */
 911     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 912
 913     playlist_ItemRelease( p_item );
 914
 915     return VLC_SUCCESS;
 916 }